Zobrazeno 1 - 10
of 3 807
pro vyhledávání: '"Hari, K"'
Reconfigurable holographic surfaces (RHS) are intrinsically amalgamated with reconfigurable intelligent surfaces (RIS), for beneficially ameliorating the signal propagation environment. This potent architecture significantly improves the system perfo
Externí odkaz:
http://arxiv.org/abs/2410.15995
We establish the spacetime Penrose inequality in spherical symmetry in spacetime dimensions $n+1\geq3$ with charge and cosmological constant from the initial data perspective. We also show that this result extends to the Gauss-Bonnet theory of gravit
Externí odkaz:
http://arxiv.org/abs/2409.07639
We show that the near horizon geometry of 5-dimensional extreme (i.e., degenerate) stationary vacuum black holes, with or without cosmological constant, whose event horizons exhibit $\SU(2)$ symmetry must be that of a Berger sphere.
Externí odkaz:
http://arxiv.org/abs/2409.00910
Single-shot magnetic resonance (MR) imaging acquires the entire k-space data in a single shot and it has various applications in whole-body imaging. However, the long acquisition time for the entire k-space in single-shot fast spin echo (SSFSE) MR im
Externí odkaz:
http://arxiv.org/abs/2409.07457
Autor:
Sievers, Kam To Billy, Newhook, Liam, Muth, Sarah, Booth, Ivan, Hennigar, Robie A., Kunduri, Hari K.
During a binary black hole merger, multiple intermediary marginally outer trapped tubes connect the initial pair of apparent horizons with the final (single) apparent horizon. The marginally outer trapped surfaces (MOTSs) that foliate these tubes can
Externí odkaz:
http://arxiv.org/abs/2312.00769
We investigate deformations of the Kerr-(A)dS near horizon geometry and derive partial infinitesimal rigidity results for it. The proof comprises two parts. First, we follow the analysis of Jezierski and Kami\'nski [Gen Rel Grav 45 (2013) 987--1004]
Externí odkaz:
http://arxiv.org/abs/2310.06186
This paper proposes a Joint Channel Estimation and Symbol Detection (JED) scheme for Multiple-Input Multiple-Output (MIMO) wireless communication systems. Our proposed method for JED using Alternating Direction Method of Multipliers (JED-ADMM) and it
Externí odkaz:
http://arxiv.org/abs/2308.08917
In a transmit preprocessing aided frequency division duplex (FDD) massive multi-user (MU) multiple-input multiple-output (MIMO) scheme assisted orthogonal frequency-division multiplexing (OFDM) system, it is required to feed back the frequency domain
Externí odkaz:
http://arxiv.org/abs/2307.15943
Autor:
Durgut, Turkuler, Kunduri, Hari K.
Publikováno v:
Annals of Physics 457 (2023) 169435
We construct supersymmetric gravitational soliton solutions of five-dimensional gauged supergravity coupled to arbitrarily many vector multiplets. The solutions are complete, globally stationary, $1/4$-BPS and are asymptotically locally AdS$_5$ with
Externí odkaz:
http://arxiv.org/abs/2307.02466
As part of a programme to classify quasi-Einstein metrics $(M,g,X)$ on closed manifolds and near-horizon geometries of extreme black holes, we study such spaces when the vector field $X$ is divergence-free but not identically zero. This condition is
Externí odkaz:
http://arxiv.org/abs/2307.00738